<!doctype html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>div</title>
	<style type="text/css">
		.box{
			width: 200px;
			height: 100px;
			background: red;
			padding-top: 100px;

		}
		.son{
			width: 100px;
			height: 100px;
			background: blue;
			overflow: auto;

		}
		/*.box1{
			width: 200px;
			height: 200px;
			margin: 50px;
			background: blue;
			float: left;
		}*/

	</style>
</head>
<body>
	<div class="box">
		<div class="son">
			<p>
				学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思
			</p>
		</div>
	</div>
	<div class="box">
		<div class="son">
			<p>
				学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思学并思
			</p>
		</div>
	</div>
	<!-- <div class="box1">
	</div> -->
</body>
</html>